DATA SH EET
Product specification
Supersedes data of September 1994
File under Discrete Semiconductors, SC04
1997 Mar 12
DISCRETE SEMICONDUCTORS
BC635; BC637; BC639
NPN medium power transistors
b
ook, halfpage
M3D186
1997 Mar 12 2
Philips Semiconductors Product specification
NPN medium power transistors BC635; BC637; BC639
FEATURES
High current (max. 1 A)
Low voltage (max. 80 V).
APPLICATIONS
Driver stages of audio/video amplifiers.
DESCRIPTION
NPN transistor in a TO-92; SOT54 plastic package.
PNP complements: BC636, BC638 and BC640.
PINNING
PIN DESCRIPTION
1 base
2 collector
3 emitter
Fig.1 Simplified outline (TO-92; SOT54)
and symbol.
handbook, halfpage
1
3
2
MAM259
2
1
3
QUICK REFERENCE DATA
SYMBOL PARAMETER CONDITIONS MIN. MAX. UNIT
VCBO collector-base voltage open emitter
BC635 45 V
BC637 60 V
BC639 100 V
VCEO collector-emitter voltage open base
BC635 45 V
BC637 60 V
BC639 80 V
ICM peak collector current 1.5 A
Ptot total power dissipation Tamb 25 °C0.83 W
hFE DC current gain IC= 150 mA; VCE = 2 V 40 250
fTtransition frequency IC= 50 mA; VCE = 5 V; f = 100 MHz 100 MHz
1997 Mar 12 3
Philips Semiconductors Product specification
NPN medium power transistors BC635; BC637; BC639
LIMITING VALUES
In accordance with the Absolute Maximum Rating System (IEC 134).
THERMAL CHARACTERISTICS
Note
1. Transistor mounted on an FR4 printed-circuit board.
SYMBOL PARAMETER CONDITIONS MIN. MAX. UNIT
VCBO collector-base voltage open emitter
BC635 45 V
BC637 60 V
BC639 100 V
VCEO collector-emitter voltage open base
BC635 45 V
BC637 60 V
BC639 80 V
VEBO emitter-base voltage open collector 5V
I
Ccollector current (DC) 1A
I
CM peak collector current 1.5 A
IBM peak base current 200 mA
Ptot total power dissipation Tamb 25 °C0.83 W
Tstg storage temperature 65 +150 °C
Tjjunction temperature 150 °C
Tamb operating ambient temperature 65 +150 °C
SYMBOL PARAMETER CONDITIONS VALUE UNIT
Rth j-a thermal resistance from junction to ambient note 1 150 K/W
1997 Mar 12 4
Philips Semiconductors Product specification
NPN medium power transistors BC635; BC637; BC639
CHARACTERISTICS
Tj=25°C unless otherwise specified.
SYMBOL PARAMETER CONDITIONS MIN. MAX. UNIT
ICBO collector cut-off current IE= 0; VCB =30V 100 nA
IE= 0; VCB =30V; T
j= 150 °C10 µA
IEBO emitter cut-off current IC= 0; VEB =5V 100 nA
hFE DC current gain VCE = 2 V; see Fig.2
IC= 5 mA 40
IC= 150 mA 40 250
IC= 500 mA 25
hFE DC current gain IC= 150 mA; VCE = 2 V; see Fig.2
BC635-10; BC637-10; BC639-10 63 160
BC635-16; BC637-16; BC639-16 100 250
VCEsat collector-emitter saturation voltage IC= 500 mA; IB=50mA 500 mV
VBE base-emitter voltage IC= 500 mA; VCE =2V 1V
f
Ttransition frequency IC= 50 mA; VCE = 5 V; f = 100 MHz 100 MHz
DC current gain ratio of the
complementary pairs IC= 150 mA; VCE=2V 1.6
hFE1
hFE2
-----------
handbook, full pagewidth
0
160
80
120
40
MBH729
101
hFE
1IC (mA)
10 103
102
VCE = 2 V
Fig.2 DC current gain; typIcal values.
1997 Mar 12 5
Philips Semiconductors Product specification
NPN medium power transistors BC635; BC637; BC639
PACKAGE OUTLINE
UNIT A
REFERENCES
OUTLINE
VERSION EUROPEAN
PROJECTION ISSUE DATE
IEC JEDEC EIAJ
mm 5.2
5.0
b
0.48
0.40
c
0.45
0.40
D
4.8
4.4
d
1.7
1.4
E
4.2
3.6
L
14.5
12.7
e
2.54
e1
1.27
L1(1)
2.5
b1
0.66
0.56
DIMENSIONS (mm are the original dimensions)
Note
1. Terminal dimensions within this zone are uncontrolled to allow for flow of plastic and terminal irregularities.
SOT54 TO-92 SC-43 97-02-28
A L
0 2.5 5 mm
scale
b
c
D
b1L1
d
E
Plastic single-ended leaded (through hole) package; 3 leads SOT54
e1e
1
2
3
1997 Mar 12 6
Philips Semiconductors Product specification
NPN medium power transistors BC635; BC637; BC639
DEFINITIONS
LIFE SUPPORT APPLICATIONS
These products are not designed for use in life support appliances, devices, or systems where malfunction of these
products can reasonably be expected to result in personal injury. Philips customers using or selling these products for
use in such applications do so at their own risk and agree to fully indemnify Philips for any damages resulting from such
improper use or sale.
Data Sheet Status
Objective specification This data sheet contains target or goal specifications for product development.
Preliminary specification This data sheet contains preliminary data; supplementary data may be published later.
Product specification This data sheet contains final product specifications.
Limiting values
Limiting values given are in accordance with the Absolute Maximum Rating System (IEC 134). Stress above one or
more of the limiting values may cause permanent damage to the device. These are stress ratings only and operation
of the device at these or at any other conditions above those given in the Characteristics sections of the specification
is not implied. Exposure to limiting values for extended periods may affect device reliability.
Application information
Where application information is given, it is advisory and does not form part of the specification.
1997 Mar 12 7
Philips Semiconductors Product specification
NPN medium power transistors BC635; BC637; BC639
NOTES
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Printed in The Netherlands 117047/00/02/pp8 Date of release: 1997 Mar 12 Document order number: 9397 750 01666